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Solar proton events of October–November 2003: Ozone depletion in the Northern Hemisphere polar winter as seen by GOMOS/Envisat
Author(s) -
Seppälä A.,
Verronen P. T.,
Kyrölä E.,
Hassinen S.,
Backman L.,
Hauchecorne A.,
Bertaux J. L.,
Fussen D.
Publication year - 2004
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2004gl021042
Subject(s) - ozone , ozone depletion , satellite , atmospheric sciences , environmental science , polar , northern hemisphere , southern hemisphere , meteorology , ozone layer , climatology , physics , geology , astronomy
Observations of O 3 and NO 2 made by the GOMOS instrument on board European Space Agency's Envisat satellite have been used to monitor the increase of NO 2 and depletion of ozone due to the solar proton events of October–November 2003. For the first time this phenomenon was measured in polar winter conditions by a satellite instrument. Results show NO 2 enhancement of several hundred per cent and tens of per cent ozone depletion between 36 and 60 km, an effect which lasts several months after the events. A comparison of the after‐event concentrations of NO 2 and ozone reveals a strong negative correlation.